Slow Startup in Mavericks (3 minutes)

Hi

I bought FF4 Pro. I'm running Mavericks. At the beginning all seems fine.
Now after downloading all filters the startup time both standalone and PSP5 Plugin is 3-4 Minutes.

A normal reinstall doesn't fix this tis issue.

1. How can I completely remove (with all filers) and reinstall FF4 in Mavericks?

2. Is there any way to fix this without reinstalling?

3. How can I speed up the previews? Sometimes 1 minute but on some filters 3 minutes for the small resolution preview.

I'm using the latest mac mini with ssd-fusion drive and 32 Gig ram.

Thanks in advance.

Anybody withs an similar system? What are your times?
The long startup time is a huge problem to me because of the frequently crashes after 10-20 previews.

FF4 is a great tool, I hope I can enjoy it again.

Thanks. But the long startup is every time, not only after installing new filters. I installed FF4 on another Mac and it works fine.
Maybe the library file is corrupted?

So I copied the library folder on my main system and then delete all filters. I started FF4 without any filters. Startup only 2 sec.

Then I copied the filter backup back into the library folder and now FF4 needs only 5 seconds to stat. Perfect